High CO methanation activity on zirconia-supported molybdenum sulfide catalyst

In this study, different methods were used to prepare MoO3/ZrO2 catalysts for sulfur resistant methanation reaction. It was found that MoO3/ZrO2 catalyst prepared by one-step co-precipitation method achieved high methanation performance. CO conversion could reach up to 90% on 25 wt% MoO3/ZrO2 cataly...

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Bibliographic Details
Published inJournal of energy chemistry Vol. 23; no. 5; pp. 625 - 632
Main Authors Li, Zhenhua, Tian, Ye, He, Jia, Wang, Baowei, Ma, Xinbin
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.09.2014
Elsevier
Subjects
Applied sciences
CO转化率
Energy
Exact sciences and technology
Fuel processing. Carbochemistry and petrochemistry
Fuels
Gas processing
high CO conversion
MoO3/ZrO2 catalyst
Mo基催化剂
one-step co-precipitation method
sulfur resistant methanation
三氧化钼
氧化锆
甲烷化反应
硫化
钼催化剂
锆催化剂
sulfur resistant methanation
high CO conversion
MoO3/ZrO2 catalyst
one-step co-precipitation method
Methanation
Molybdenum sulfide
Zirconium IV Oxides
Temperature programmed reduction
MoO
Texture
Supported catalyst
Surface structure
Characterization
Raman spectrometry
Zirconium Oxides
Carbon monoxide
Coprecipitation
Chemical precipitation
X ray diffraction
Zirconia
Transmission electron microscopy
catalyst
Morphology
ZrO
X ray fluorescence spectrometry
Catalyst activity
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Summary:In this study, different methods were used to prepare MoO3/ZrO2 catalysts for sulfur resistant methanation reaction. It was found that MoO3/ZrO2 catalyst prepared by one-step co-precipitation method achieved high methanation performance. CO conversion could reach up to 90% on 25 wt% MoO3/ZrO2 catalyst, much higher than that on the conventional 25 wt% MoO3/Al2O3 catalyst. The Mo-based catalysts were characterized by XRF, XRD, Raman, BET, TEM and H2-TPR etc. It was found that MoO3 particles were highly dispersed on ZrO2 support for 25 wt% MoO3/ZrO2 catalyst prepared at 65-85℃ because of its relatively larger pore size, which contributed to a high CO conversion. Meanwhile, when MoO3 loading exceeded the monolayer coverage, the formed crystalline MoO3 and ZrM020g might block the micropores of the catalyst and make the methanation activity declined. These results are useful for preparing highly efficient catalyst for CO methanation process.
Bibliography:In this study, different methods were used to prepare MoO3/ZrO2 catalysts for sulfur resistant methanation reaction. It was found that MoO3/ZrO2 catalyst prepared by one-step co-precipitation method achieved high methanation performance. CO conversion could reach up to 90% on 25 wt% MoO3/ZrO2 catalyst, much higher than that on the conventional 25 wt% MoO3/Al2O3 catalyst. The Mo-based catalysts were characterized by XRF, XRD, Raman, BET, TEM and H2-TPR etc. It was found that MoO3 particles were highly dispersed on ZrO2 support for 25 wt% MoO3/ZrO2 catalyst prepared at 65-85℃ because of its relatively larger pore size, which contributed to a high CO conversion. Meanwhile, when MoO3 loading exceeded the monolayer coverage, the formed crystalline MoO3 and ZrM020g might block the micropores of the catalyst and make the methanation activity declined. These results are useful for preparing highly efficient catalyst for CO methanation process.
MoO3/ZrO2 catalyst; one-step co-precipitation method; sulfur resistant methanation; high CO conversion
21-1585/O4
ISSN:2095-4956
DOI:10.1016/S2095-4956(14)60193-5